EVIDENCE FOR DIFFERENT SPATIAL-DISTRIBUTION OF PINNED VORTICES AND SCREENING CURRENTS

被引：2

作者：

RENARD, JP ^{[1
]}

GIOVANNELLA, C ^{[1
]}

FRUCHTER, L ^{[1
]}

CHAPPERT, C ^{[1
]}

机构：

[1] UNIV ROMA 2,DIPARTIMENTO FIS,I-00173 ROME,ITALY

来源：

PHYSICA C | 1988年 / 153卷 / 01期

关键词：

Ceramic Materials - Oxides - Superconducting Devices;

D O I：

10.1016/0921-4534(88)90617-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated by SQUID magnetometry several YBaCuO sintered samples. After field cooling the sample, and having carefully compensated the remanent FC dc magnetization we observed a signal with the quadrupolar characteristic shape. It demonstrates clearly the presence of two magnetic contributions of opposite sign whose barycenters do not coincide. They are identified with the spatial distribution of the screening currents and of the pinned vortices. The role played by the intergranular Josephson junctions in the vortex pinning during the field cooling procedure is also briefly illustrated.

引用

页码：330 / 331

页数：2

共 4 条

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[2] CRONEMEYER DC, IN PRESS ULTRA LOW F
[3] GIOVANNELLA C, 1987, INT J MOD PHYS B, V1, P1011
[4] DIRECT MACROSCOPIC OBSERVATION OF ANTI-FERROMAGNETIC ORDER IN ZERO APPLIED FIELD
GUY, CN
STROMOLSEN, JO
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